﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Security;
using EfData;
using Mvc4WebApiKoTb.Models;

namespace Mvc4WebApiKoTb.Controllers
{

    [Authorize]
    public class AccountController : Controller
    {
        [AllowAnonymous]
        public ActionResult Login(string returnUrl)
        {
            ViewBag.ReturnUrl = returnUrl;
            return View();
        }

        [AllowAnonymous]
        [HttpPost]
        public ActionResult Login(LoginModel model, string returnUrl)
        {
            if (ModelState.IsValid)
            {
                //ACHTUNG HIER müsste vorher nat. ein DB Abgleich mit den Usern aus der DB stattfinden
                //Aktuell setzten wir hier jeden User als Authorisiert, wenn er einen beliebigen Usernamen und PW angibt.
                FormsAuthentication.SetAuthCookie(model.UserName, model.RememberMe);
                
                if (Url.IsLocalUrl(returnUrl))
                {
                    return Redirect(returnUrl);
                }
                else
                {
                    return RedirectToAction("Index", "Home");
                }

            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }

        public ActionResult LogOff()
        {
            FormsAuthentication.SignOut();

            return RedirectToAction("Index", "Home");
        }

        //
        // GET: /Account/Register

        [AllowAnonymous]
        public ActionResult Register()
        {
            return View();
        }

        //
        // POST: /Account/Register

        [AllowAnonymous]
        [HttpPost]
        public ActionResult Register(RegisterModel model)
        {
            if (ModelState.IsValid)
            {
                // Attempt to register the user
                //Person person = new Person();
                //person.Vorname = model.Vorname;
                //person.Nachname = model.Nachname;
                //person.Passwort = model.Password;
                //person.EMail = model.Email;

                ////Prüfen ob es die Person schon gibt
                //var pers = (from ePerson in CurrentHttpContext.GetDataModel().PersonSatz
                //           where ePerson.EMail.ToLower() == model.Email.ToLower()
                //           select ePerson.ID).Any();

                //if (!pers)
                //{
                //    CurrentHttpContext.GetDataModel().PersonSatz.Add(person);
                //    FormsAuthentication.SetAuthCookie(model.Vorname, createPersistentCookie: false);
                //    return RedirectToAction("Index", "Home");
                //}
                //else
                //{
                //    ModelState.AddModelError("", "Benutzername existiert bereits, bitte einen anderen wählen.");
                //}
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }

        //
        // GET: /Account/ChangePassword

        public ActionResult ChangePassword()
        {
            return View();
        }

        //
        // POST: /Account/ChangePassword

        [HttpPost]
        public ActionResult ChangePassword(ChangePasswordModel model)
        {
            if (ModelState.IsValid)
            {

                // ChangePassword will throw an exception rather
                // than return false in certain failure scenarios.
                bool changePasswordSucceeded;
                try
                {
                    MembershipUser currentUser = Membership.GetUser(User.Identity.Name, userIsOnline: true);
                    changePasswordSucceeded = currentUser.ChangePassword(model.OldPassword, model.NewPassword);
                }
                catch (Exception)
                {
                    changePasswordSucceeded = false;
                }

                if (changePasswordSucceeded)
                {
                    return RedirectToAction("ChangePasswordSuccess");
                }
                else
                {
                    ModelState.AddModelError("", "The current password is incorrect or the new password is invalid.");
                }
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }

        //
        // GET: /Account/ChangePasswordSuccess

        public ActionResult ChangePasswordSuccess()
        {
            return View();
        }

        private IEnumerable<string> GetErrorsFromModelState()
        {
            return ModelState.SelectMany(x => x.Value.Errors.Select(error => error.ErrorMessage));
        }

        #region Status Codes
        private static string ErrorCodeToString(MembershipCreateStatus createStatus)
        {
            // See http://go.microsoft.com/fwlink/?LinkID=177550 for
            // a full list of status codes.
            switch (createStatus)
            {
                case MembershipCreateStatus.DuplicateUserName:
                    return "User name already exists. Please enter a different user name.";

                case MembershipCreateStatus.DuplicateEmail:
                    return "A user name for that e-mail address already exists. Please enter a different e-mail address.";

                case MembershipCreateStatus.InvalidPassword:
                    return "The password provided is invalid. Please enter a valid password value.";

                case MembershipCreateStatus.InvalidEmail:
                    return "The e-mail address provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.InvalidAnswer:
                    return "The password retrieval answer provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.InvalidQuestion:
                    return "The password retrieval question provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.InvalidUserName:
                    return "The user name provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.ProviderError:
                    return "The authentication provider returned an error. Please verify your entry and try again. If the problem persists, please contact your system administrator.";

                case MembershipCreateStatus.UserRejected:
                    return "The user creation request has been canceled. Please verify your entry and try again. If the problem persists, please contact your system administrator.";

                default:
                    return "An unknown error occurred. Please verify your entry and try again. If the problem persists, please contact your system administrator.";
            }
        }
        #endregion
    }
}
